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A Review of Manganese-Oxidizing Bacteria (MnOB): Applications, Future Concerns, and Challenges

Author

Listed:
  • Yanan Cai

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Kun Yang

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Chaochao Qiu

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Yunze Bi

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Bowen Tian

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Xuejun Bi

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

Abstract

Groundwater serving as a drinking water resource usually contains manganese ions (Mn 2+ ) that exceed drinking standards. Based on the Mn biogeochemical cycle at the hydrosphere scale, bioprocesses consisting of aeration, biofiltration, and disinfection are well known as a cost-effective and environmentally friendly ecotechnology for removing Mn 2+ . The design of aeration and biofiltration units, which are critical components, is significantly influenced by coexisting iron and ammonia in groundwater; however, there is no unified standard for optimizing bioprocess operation. In addition to the groundwater purification, it was also found that manganese-oxidizing bacteria (MnOB)-derived biogenic Mn oxides (bioMnO x ), a by-product, have a low crystallinity and a relatively high specific surface area; the MnOB supplied with Mn 2+ can be developed for contaminated water remediation. As a result, according to previous studies, this paper summarized and provided operational suggestions for the removal of Mn 2+ from groundwater. This review also anticipated challenges and future concerns, as well as opportunities for bioMnO x applications. These could improve our understanding of the MnOB group and its practical applications.

Suggested Citation

  • Yanan Cai & Kun Yang & Chaochao Qiu & Yunze Bi & Bowen Tian & Xuejun Bi, 2023. "A Review of Manganese-Oxidizing Bacteria (MnOB): Applications, Future Concerns, and Challenges," IJERPH, MDPI, vol. 20(2), pages 1-14, January.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:2:p:1272-:d:1031507
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    References listed on IDEAS

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    1. Hang Yu & Jared R. Leadbetter, 2020. "Bacterial chemolithoautotrophy via manganese oxidation," Nature, Nature, vol. 583(7816), pages 453-458, July.
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